From d88e47c3a334447b964649518c088bf32054ed79 Mon Sep 17 00:00:00 2001
From: Nikhil Raj <nikhil.raj@arm.com>
Date: Mon, 19 Aug 2019 10:04:23 +0100
Subject: IVGCVSW-3429 Add a utility Version class

Change-Id: Id429f7d9176c775953c1261c5a3e9f1d565927c1
Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>
---
 CMakeLists.txt                        |  1 +
 src/profiling/EncodeVersion.hpp       | 56 +++++++++++++++++++++++++++++++++++
 src/profiling/test/ProfilingTests.cpp | 31 +++++++++++++++++++
 3 files changed, 88 insertions(+)
 create mode 100644 src/profiling/EncodeVersion.hpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index df4b742cda..05dd0ec16d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -417,6 +417,7 @@ list(APPEND armnn_sources
     src/profiling/CommandHandlerKey.hpp
     src/profiling/CommandHandlerRegistry.cpp
     src/profiling/CommandHandlerRegistry.hpp
+    src/profiling/EncodeVersion.hpp
     src/profiling/Packet.cpp
     src/profiling/Packet.hpp
     third-party/half/half.hpp
diff --git a/src/profiling/EncodeVersion.hpp b/src/profiling/EncodeVersion.hpp
new file mode 100644
index 0000000000..257393329a
--- /dev/null
+++ b/src/profiling/EncodeVersion.hpp
@@ -0,0 +1,56 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include <cstddef>
+
+namespace mlutil
+{
+
+namespace Impl
+{
+
+    constexpr uint32_t EncodeVersion(uint32_t major, uint32_t minor, uint32_t patch)
+    {
+        return (major << 22) | (minor << 12) | patch;
+    }
+
+} // namespace Impl
+
+// Encodes a semantic version https://semver.org/ into a 32 bit integer in the following fashion
+//
+// bits 22:31 major: Unsigned 10-bit integer. Major component of the schema version number.
+// bits 12:21 minor: Unsigned 10-bit integer. Minor component of the schema version number.
+// bits 0:11  patch: Unsigned 12-bit integer. Patch component of the schema version number.
+//
+class Version
+{
+public:
+    Version(uint32_t encodedValue)
+    {
+        m_Major = (encodedValue >> 22) & 1023;
+        m_Minor = (encodedValue >> 12) & 1023;
+        m_Patch = encodedValue & 4095;
+    }
+
+    Version(uint32_t major, uint32_t minor, uint32_t patch)
+    : m_Major(major), m_Minor(minor), m_Patch(patch) {}
+
+    uint32_t GetEncodedValue()
+    {
+        return mlutil::Impl::EncodeVersion(m_Major, m_Minor, m_Patch);
+    }
+
+    uint32_t GetMajor() {return m_Major;}
+    uint32_t GetMinor() {return m_Minor;}
+    uint32_t GetPatch() {return m_Patch;}
+
+private:
+    uint32_t m_Major;
+    uint32_t m_Minor;
+    uint32_t m_Patch;
+};
+
+} // namespace mlutil
diff --git a/src/profiling/test/ProfilingTests.cpp b/src/profiling/test/ProfilingTests.cpp
index a8ec0277d2..8a2f2bd88e 100644
--- a/src/profiling/test/ProfilingTests.cpp
+++ b/src/profiling/test/ProfilingTests.cpp
@@ -6,6 +6,7 @@
 #include "../CommandHandlerKey.hpp"
 #include "../CommandHandlerFunctor.hpp"
 #include "../CommandHandlerRegistry.hpp"
+#include "../EncodeVersion.hpp"
 #include "../Packet.hpp"
 
 #include <cstdint>
@@ -62,6 +63,36 @@ BOOST_AUTO_TEST_CASE(CheckCommandHandlerKeyComparisons)
     BOOST_CHECK(vect == expectedVect);
 }
 
+BOOST_AUTO_TEST_CASE(CheckEncodeVersion)
+{
+    mlutil::Version version1(12);
+
+    BOOST_CHECK(version1.GetMajor() == 0);
+    BOOST_CHECK(version1.GetMinor() == 0);
+    BOOST_CHECK(version1.GetPatch() == 12);
+
+    mlutil::Version version2(4108);
+
+    BOOST_CHECK(version2.GetMajor() == 0);
+    BOOST_CHECK(version2.GetMinor() == 1);
+    BOOST_CHECK(version2.GetPatch() == 12);
+
+    mlutil::Version version3(4198412);
+
+    BOOST_CHECK(version3.GetMajor() == 1);
+    BOOST_CHECK(version3.GetMinor() == 1);
+    BOOST_CHECK(version3.GetPatch() == 12);
+
+    mlutil::Version version4(0);
+
+    BOOST_CHECK(version4.GetMajor() == 0);
+    BOOST_CHECK(version4.GetMinor() == 0);
+    BOOST_CHECK(version4.GetPatch() == 0);
+
+    mlutil::Version version5(1,0,0);
+    BOOST_CHECK(version5.GetEncodedValue() == 4194304);
+}
+
 BOOST_AUTO_TEST_CASE(CheckPacketClass)
 {
     const char* data = "test";
-- 
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